Publications (43)
Cryogenic characterization of a LiAlO crystal and new results on spin-dependent dark matter interactions with ordinary matter
A. H. Abdelhameed, G. Angloher, P. Bauer +56
In this work, a first cryogenic characterization of a scintillating LiAlO single crystal is presented. The results achieved show that this material holds great potential as a…
Symplectic and orthogonal Lie algebra technology for bosonic and fermionic oscillator models of integrable systems
A. J. Macfarlane, H. Pfeiffer, F. Wagner
To provide tools, especially L-operators, for use in studies of rational Yang-Baxter algebras and quantum integrable models when the Lie algebras so(N) (b_n, d_n) or sp(2n) (c_n) a…
The effect of internal and global modes on the radial distribution function of confined semiflexible polymers
F. Thüroff, F. Wagner, E. Frey
The constraints imposed by nano- and microscale confinement on the conformational degrees of freedom of thermally fluctuating biopolymers are utilized in contemporary nano-devices…
Light Dark Matter Search Using a Diamond Cryogenic Detector
CRESST Collaboration, G. Angloher, S. Banik +56
Diamond operated as a cryogenic calorimeter is an excellent target for direct detection of low-mass dark matter candidates. Following the realization of the first low-threshold cry…
Deep-underground dark matter search with a COSINUS detector prototype
The COSINUS Collaboration, G. Angloher, M. R. Bharadwaj +36
Sodium iodide (NaI) based cryogenic scintillating calorimeters using quantum sensors for signal read out have shown promising first results towards a model-independent test of the…
First measurements of remoTES cryogenic calorimeters: easy-to-fabricate particle detectors for a wide choice of target materials
G. Angloher, M. R. Bharadwaj, I. Dafinei +34
Low-temperature calorimeters based on a readout via Transition Edge Sensors (TESs) and operated below mK are well suited for rare event searches with outstanding resolution a…
The hematite (alpha-Fe_2 O_3) (0001) surface: evidence for domains of distinct chemistry
X. -G. Wang, W. Weiss, Sh. K. Shaikhutdinov +5
Using spin-density functional theory we investigated various possible structures of the hematite (0001) surface. Depending on the ambient oxygen partial pressure, two geometries ar…
Secular Equilibrium Assessment in a Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation
G. Angloher, S. Banik, G. Benato +58
CRESST is a leading direct detection sub- dark matter experiment. During its second phase, cryogenic bolometers were used to detect nuclear recoils off the $\ma…
Testing spin-dependent dark matter interactions with lithium aluminate targets in CRESST-III
G. Angloher, S. Banik, G. Benato +58
In the past decades, numerous experiments have emerged to unveil the nature of dark matter, one of the most discussed open questions in modern particle physics. Among them, the CRE…
The k-folded sine-Gordon model in finite volume
Z. Bajnok, L. Palla, G. Takacs +1
We consider the k-folded sine-Gordon model, obtained from the usual version by identifying the scalar field after k periods of the cosine potential. We examine (1) the ground state…
Snowmass2021 Cosmic Frontier: The landscape of low-threshold dark matter direct detection in the next decade
Rouven Essig, Graham K. Giovanetti, Noah Kurinsky +90
The search for particle-like dark matter with meV-to-GeV masses has developed rapidly in the past few years. We summarize the science case for these searches, the recent progress,…
Simulation-based design study for the passive shielding of the COSINUS dark matter experiment
G. Angloher, I. Dafinei, N. Di Marco +28
The COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) experiment aims at the detection of dark matter-induced recoils in sodium iodide (Na…
Interpretation of Mössbauer spectra in the energy and time domain with neural networks
H. Paulsen, R. Linder, F. Wagner +3
An artificial neural network for extracting reasonable and fast estimates of hyperfine parameters from Mössbauer spectra in the energy or time domain is outlined. First promising…
SUSY sine-Gordon theory as a perturbed conformal field theory and finite size effects
Z. Bajnok, C. Dunning, L. Palla +2
We consider SUSY sine-Gordon theory in the framework of perturbed conformal field theory. Using an argument from Zamolodchikov, we obtain the vacuum structure and the kink adjacenc…
Geometric quantisation of the global Liouville mechanics
Z. Bajnok, D. Nogradi, D. Varga +1
The reduced SL(2,R) WZW quantum mechanics is analysed in the framework of geometric quantization. The spectrum of the Hamiltonian is determined, and it is found, that contrary to t…
The General Coset Orbifold Action
M. B. Halpern, F. Wagner
Recently an action formulation, called the general WZW orbifold action, was given for each sector of every WZW orbifold. In this paper we gauge this action by general twisted gauge…
Detector development for the CRESST experiment
G. Angloher, S. Banik, G. Benato +55
Recently low-mass dark matter direct searches have been hindered by a low energy background, drastically reducing the physics reach of the experiments. In the CRESST-III experiment…
First observation of single photons in a CRESST detector and new dark matter exclusion limits
CRESST Collaboration, G. Angloher, S. Banik +56
The main goal of the CRESST-III experiment is the direct detection of dark matter particles via their scattering off target nuclei in cryogenic detectors. In this work we present t…
Quantum Gravity in 30 Questions
R. Loll, G. Fabiano, D. Frattulillo +1
Quantum gravity is the missing piece in our understanding of the fundamental interactions today. Given recent observational breakthroughs in gravity, providing a quantum theory for…
Description of CRESST-II and CRESST-III pulse shape data
G. Angloher, S. Banik, D. Bartolot +62
A set of data from 68 cryogenic detectors operated in the CRESST dark matter search experiment between 2013 and 2019 was collected and labeled to train binary classifiers for data…
Particle discrimination in a NaI crystal using the COSINUS remote TES design
COSINUS Collaboration, G. Angloher, M. R. Bharadwaj +38
The COSINUS direct dark matter experiment situated at Laboratori Nazionali del Gran Sasso in Italy is set to investigate the nature of the annually modulating signal detected by th…
DoubleTES detectors to investigate the CRESST low energy background: results from above-ground prototypes
G. Angloher, S. Banik, G. Benato +55
In recent times, the sensitivity of low-mass direct dark matter searches has been limited by unknown low energy backgrounds close to the energy threshold of the experiments known a…
Latest observations on the low energy excess in CRESST-III
G. Angloher, S. Banik, G. Benato +57
The CRESST experiment observes an unexplained excess of events at low energies. In the current CRESST-III data-taking campaign we are operating detector modules with different desi…
Water Cherenkov muon veto for the COSINUS experiment: design and simulation optimization
G. Angloher, M. R. Bharadwaj, M. Cababie +36
COSINUS is a dark matter (DM) direct search experiment that uses sodium iodide (NaI) crystals as cryogenic calorimeters. Thanks to the low nuclear recoil energy threshold and event…
Observation of a low energy nuclear recoil peak in the neutron calibration data of the CRESST-III Experiment
CRESST Collaboration, G. Angloher, S. Banik +58
New-generation direct searches for low mass dark matter feature detection thresholds at energies well below 100 eV, much lower than the energies of commonly used X-ray calibration…
White Paper and Roadmap for Quantum Gravity Phenomenology in the Multi-Messenger Era
R. Alves Batista, G. Amelino-Camelia, D. Boncioli +101
The unification of quantum mechanics and general relativity has long been elusive. Only recently have empirical predictions of various possible theories of quantum gravity been put…
Towards an automated data cleaning with deep learning in CRESST
G. Angloher, S. Banik, D. Bartolot +62
The CRESST experiment employs cryogenic calorimeters for the sensitive measurement of nuclear recoils induced by dark matter particles. The recorded signals need to undergo a caref…
Errors in Hellmann-Feynman Forces due to occupation number broadening, and how they can be corrected
F. Wagner, Th. Laloyaux, M. Scheffler
In ab initio calculations of electronic structures, total energies, and forces, it is convenient and often even necessary to employ a broadening of the occupation numbers. If done…
Results on sub-GeV Dark Matter from a 10 eV Threshold CRESST-III Silicon Detector
CRESST Collaboration, G. Angloher, S. Banik +59
We present limits on the spin-independent interaction cross section of dark matter particles with silicon nuclei, derived from data taken with a cryogenic calorimeter with 0.35 g t…
Nonperturbative study of the two-frequency sine-Gordon model
Z. Bajnok, L. Palla, G. Takacs +1
The two-frequency sine-Gordon model is examined. The focus is mainly on the case when the ratio of the frequencies is 1/2, given the recent interest in the literature. We discuss t…
Correlation Function in Ising Models
C. Ruge, P. Zhu, F. Wagner
We simulated the fourier transform of the correlation function of the Ising model in two and three dimensions using a single cluster algorithm with improved estimators. The simulat…
Double sine-Gordon model revisited
G. Takacs, F. Wagner
We reconsider the mass spectrum of double sine-Gordon theory where recent semiclassical results called into question the previously accepted picture. We use the Truncated Conformal…
Neutrino flux sensitivity to the next galactic core-collapse supernova in COSINUS
G. Angloher, M. R. Bharadwaj, M. Cababie +39
While neutrinos are often treated as a background for many dark matter experiments, these particles offer a new avenue for physics: the detection of core-collapse supernovae. Super…
New order parameters in the Potts model on a Cayley tree
F. Wagner, D. Grensing, J. Heide
For the state Potts model new order parameters projecting on a group of spins instead of a single spin are introduced. On a Cayley tree this allows the physical interpretation…
EXCESS workshop: Descriptions of rising low-energy spectra
P. Adari, A. Aguilar-Arevalo, D. Amidei +303
Many low-threshold experiments observe sharply rising event rates of yet unknown origins below a few hundred eV, and larger than expected from known backgrounds. Due to the signifi…
Quenching factors for Na recoils as a function of Tl dopant concentrations in NaI(Tl) crystals
G. Angloher, M. R. Bharadwaj, A. Böhmer +51
Thallium-doped sodium iodide (NaI(Tl)) scintillation detectors play an important role in the field of direct dark matter (DM) searches. The DAMA/LIBRA experiment stands out for its…
Yang-Baxter Algebra for the n-Harmonic Oscillator Realisation of sp(2n,R)
A. J. Macfarlane, F. Wagner
Using a rational R-matrix associated with the 4 x 4 defining matrix representation of c_2=sp(4), the Lie algebra of Sp(4), a one-site operator solution of the associated Yang-Baxte…
COSINUS model-independent sensitivity to the DAMA/LIBRA dark matter signal
G. Angloher, M. R. Bharadwaj, A. Böhmer +40
COSINUS is a dark matter direct detection experiment using NaI crystals as cryogenic scintillating calorimeters. If no signal is observed, this will constrain the dark matter scatt…
Description of CRESST-III lithium aluminate data
G. Angloher, S. Banik, G. Benato +58
Two detector modules with lithium aluminate targets were operated in the CRESST underground setup between February and June 2021. The data collected in this period was used to set…
A likelihood framework for cryogenic scintillating calorimeters used in the CRESST dark matter search
CRESST Collaboration, G. Angloher, S. Banik +57
Cryogenic scintillating calorimeters are ultrasensitive particle detectors for rare event searches, particularly for the search for dark matter and the measurement of neutrino prop…
Probing spin-dependent dark matter interactions with Li
G. Angloher, G. Benato, A. Bento +55
CRESST is one of the most prominent direct detection experiments for dark matter particles with sub-GeV/c mass. One of the advantages of the CRESST experiment is the possibilit…
Optimal operation of cryogenic calorimeters through deep reinforcement learning
G. Angloher, S. Banik, G. Benato +59
Cryogenic phonon detectors with transition-edge sensors achieve the best sensitivity to light dark matter-nucleus scattering in current direct detection dark matter searches. In su…
High-Dimensional Bayesian Likelihood Normalisation for CRESST's Background Model
G. Angloher, S. Banik, G. Benato +59
Using CaWO crystals as cryogenic calorimeters, the CRESST experiment searches for nuclear recoils caused by the scattering of potential Dark Matter particles. A reliable identi…